Multiple glass sheet glazing construction



Aug. 9, 1949.

Snventor 926556 gduzyfw Patented Aug. 9, 1949 MULTIPLE GLASS sneer GLAZING; CONSTRUCTION Frank A. Rodman, Toledo, Ohio, assignor to Libbey-Owens-Ford Glass Company, Toledo, Ohio, a corporation of 'Ohio Application February 6, 1.947., SerialNo. 7.261189! (Cl; 20-56L5) 6 Claims.

The present invention relates broadly to the multiple glazing of window openings, and more particularly to a double glass sheet glazing construction for railway cars, busses, and other enclosures.

An object: of the invention is to provide a double glazing construction especially adapted for, although not limited to, the mounting of bent or curved sheets of glass and which is designed to reduce thesetting up of strains in the glass sheets and the liability of breakage thereof.

Another object of -the invention is to provide a double glazing construction 50 designed that it will readily adapt itself to differences in the curvature of the glass sheets and variations between the curvature of the glass sheet and the rigid supporting frame in which said sheets are mounted.

Another object of the invention is the provision of an improved mounting for the glass sheets which will permit them to float independently of one another under varying air pressure conditions while maintaining the space between the said sheets hermetically sealed.

A further object of the invention is the provision of an improved mounting for the glass sheets which will permit ready and convenient removal of either of said sheets for cleaning or replacement without disturbing the other sheet.

Other objects and advantages of the invention will become more apparent during the course of the following description, when taken in, connection with the accompanying drawings.

In the drawings, wherein like numerals are employed to designate like parts throughout the same:

Fig. 1 is a perspective sectional view of a double glass sheet glazing construction madev in accordance with the invention;

' Fig. 2 is a transverse, sectional view there.- through; and

Fig 3 is a transverse sectional view through one of the mounting strips.

With reference. now to the drawings, 5 designates the outer wall or facing of a railway car, bus, or other enclosure; having an opening to be glazed. Arranged inwardly of the wall 5 and surrounding the opening is a window frame. 5 sub.- stantially hollow in cross section and including an L-shaped, member having a base portion 1 and flange 8 arranged at right angle thereto. Mounted on the base portion 1 is a substantially Z-shaped member 9 including the oppositely directed legs Hi and l I connected by a web portion 12; The leg I0 is suitably secured to the baseportion 1 of the frame 6 by welding or by bolts, rivets, or the like [3, while secured to the leg I l is a strip of suitable insulating material It.

Carried by the strip of insulating material 14 are the three sash sections l5, l6 and I1 in the form, of rectangular metal bars. Associated with the sash sections. i5, 16. and H are the outer and inner mounting strips l8 and Is for the glass sheets 20, and 2|, respectively, which are arranged in spaced relation to provide an insulating air space 22' therebetween.

The. mounting. strips [8 and [9 are. iormed. of a suitable. resilientv material, preierably rubber or other elastic, deformable, material. extruded or molded to, the, cross section illustrated in Fig. 3. Each mounting strip. comprises. a body portion 23. provided with a longitudinally extended groove 24 projected inwardly from the outer face. of the stripto a. depth suficientto term the spaced legs 25. and 26 which serve to gri the glass sheet therebetween.

Formed integral withv the.- body portion 23.- is an inwardly directedv leg, 21 terminating in an enlarged foot, 28.. When the mounting strips I18 and l9- are assembled with the sash. sections l5,

l6 and i1, true-legs= 21 arereeeived between the center sash section I 8 and outer and, inner sash sections l5 and. H respectively, with the-feet- Z8 fitting within correspondingly shaped recesses 29 rorrmedv by complemental grooves in the adjacent faces; of adjoining sash sections. When the mounting strips-181 and I9 are associated with the sash; sections, as shownv in- Fig; 2; the sashsections t5: and l't are secured to the center sash sec.- tion l6 by screws 30 and 3| toefi rmly clamp the legs and foot portions or the mounting strips in place therebetween. The center sash'section I6 is secured to the leg H of Z-shaped member 9 by screws 32 which likewise serve to secure the strip of insulating material M in: place. With this construction, either mounting strip and glass sheet carried thereby can be removed independently of the other mounting strip and glass sheet by removing the respective screws 30 or 3| to release the sash section IE or- H.

In the outer'faceof the body portion 230i each mounting strip l8 and I9 is located a sub:- stantially V-shaped groove 33' toreceive a wedging filler strip 34, the insertion of which eX pands' the groove, and places the leg, 25 under a compressive stress'and forces it' into firm clamp ing engagement. with the marginal portion .of the glasssheet received within the groove. 24.

The filler strip'at may also be. iormedoi molded or extruded rubber but is preferably stiffer i, or

designed for this purpose, When inserted;v the glass sheet will be firmly clamped between the legs 25 and 26 which hug tightly the marginal portions of the said sheet positioned within the 35, and this material cooperates with the strip of,

insulating material I4 to form a barrier against the conduction of heat or cold from one side of the I window mounting to the other.

As pointed out above, the double windo mounting of this invention is of particular utility when installing sheets of glass which are bent or curved, and in such an installation it is of course necessary that the window frame 6 and sash sections I 5, l6 and I! be similarly bent or curved. As shown in Fig. 1, the window frame and sash sections are curved longitudinally to receive correspondingly curved glass sheets 20 and 2|. However, the two glass sheets may not always have exactly the same curvature and likewise their curvature may not be exactly the same as that of the window frame and sash sections. To compensate for these variations, the glass sheets 20 and 2| are mounted in individual, resilient mounting strips I8 and I9 which accommodate themselves to the curvature of the said sheets. Likewise, since the mounting strips are independently carried by the sash sections, the legs 21 of said strips will accommodate themselves to the curvature of said sash sections even though the said sash sections do not have exactly the same curvature as the glass sheets. Thus, when the sash sections are secured together by the bolts 30 and 3! to clamp the mounting strips l8 and I9 in place, no strain will be placed upon the glass sheets so that the liability of breakage thereof will be greatly reduced. Since the glass'sheets are independently mounted,- they can be readily removed for cleaning or replacement and either may be removed without disturbing the other. Further, the provision of independent mounting strips for the glass sheets will permit the sheets to "float relative to one another in the window opening under varying inside and outside air pressure conditions.

It is to be understood that the form of the invention herewith shown and described is to be taken as a preferred embodiment of the same, and that various changes in the shape, size and arrangement of parts may be resorted to without departing from the spirit of the invention or the scope of the subjoined claims.

Iclaim: l Y

1. In a multiple glass sheet glazing construction, individual resilient mounting strips for clampingly engaging the marginal portions of glass sheets arranged in spaced relation to provide an insulating space therebetween, each mounting strip having a leg portion, a frame, sash sections carried by said frame, and means for clamping the leg portions of said mounting strips between said sash sections.

2. In a multiple glass sheet glazing. construction, individual resilient mounting strips for clampingly engaging the marginal portions of glass sheets arranged in spaced relation to provide an insulating space therebetween, each mounting the leg portions of the mounting strips between said sash sections, said leg portions terminating in enlarged foot portions received within recesses formed by complemental grooves in the adjacent sash sections.

3. In a multiple glass sheet glazing construction, individual resilient mounting strips for clampingly engaging the marginal portions of glass sheets arranged in spaced relation to provide an insulating space therebetween, each mounting strip having a leg portion, a frame, sash sections in the form of three spaced, substantially parallel bars carried by said frame, means for securing the center sash bar to said frame, and means for securing the outer sash bars to said center sash bar independently of one another to clamp the leg portions of the mounting strips therebetween.

4. In a multiple glass sheet glazing construction, individual resilient mounting strips for clampingly engaging the marginal portions of glass sheets arranged in spaced relation to provide an insulating space therebetween, each mounting strip having a leg portion, a frame, sash sections in the form of three spaced, substantially parallel bars carried by said frame, means for securing the center sash bar to said frame, and means for securing the outer sash bars to said center sash bar independently of one another to clamp the leg portions of the mounting strips therebetween, said leg portions terminating in enlarged foot portions received within recesses formed by complemental grooves in the adjacent faces of adjoining sash bars.

5. In a multiple glass sheet glazing construction, individual resilient mounting strips having grooves for receiving the marginal portions of curved sheets of glass, said mounting strips being also provided with leg portions, a rigid frame curved longitudinally, three rigid sash bars carried by the frame and similarly curved, means for securing the center sash bar to said frame, and means for clamping the leg portions of the mounting strips between the center sash bar and outer sash bars, with the glass sheets arranged in spaced, substantially parallel relation.

6. In a multiple glass sheet glazing construction, individual resilient mounting strips having grooves for receiving the marginal portions of curved sheets of glass, said mounting strips being also provided with leg portions, a rigid frame curved longitudinally, three rigid sash bars carried by the frame and similarly curved, means for securing the center sash bar to said frame, and means for clamping the leg portions of the mounting strips between the center sash bar and outer sash bars, with the glass sheets arranged in spaced, substantially parallel relation, said leg portions terminating in enlarged foot portions received within recesses formed by complemental grooves in the adjacent faces of adjoining sash sections.

FRANK A. RODMAN.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 2,015,789 Fox et a] Oct. 1, 1935 2,189,137 Eichner Feb. 6, 1940 2,244,491 Englehart June 3, 1941 2,303,149 Verhagen Nov. 24, 1942 2,383,691 Smith Aug. 28, 1945 

